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In February, Mr. Durazzo, the Colorado fund-raiser, secured a pledge of $10,000 each from the couple to the Democratic National Committee.

“This is not an investment; we’re not going to recoup the money,” said Durazzo, 60.

“We did this last year, too, but the guy who finished last was in shape,” fellow league participant Mike Durazzo told the Asbury Park Press.

The outcome data of the key trial by Durazzo et al has for over 6 months been publically known to be impossible.

It could be that black patients lacked access to the same treatments as whites, or that black patients' circulation problems are more severe by the time they seek help from a doctor, Durazzo's team writes.